drivers/gpu/drm/exynos/exynos_drm_drv.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* exynos_drm_drv.h
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  * Authors:
   6  *      Inki Dae <inki.dae@samsung.com>
   7  *      Joonyoung Shim <jy0922.shim@samsung.com>
   8  *      Seung-Woo Kim <sw0312.kim@samsung.com>
   9  */
  10
  11 #ifndef _EXYNOS_DRM_DRV_H_
  12 #define _EXYNOS_DRM_DRV_H_
  13
  14 #include <linux/module.h>
  15
  16 #include <drm/drm_crtc.h>
  17 #include <drm/drm_device.h>
  18 #include <drm/drm_plane.h>
  19
  20 #define MAX_CRTC        3
  21 #define MAX_PLANE       5
  22 #define MAX_FB_BUFFER   4
  23
  24 #define DEFAULT_WIN     0
  25
  26 struct drm_crtc_state;
  27 struct drm_display_mode;
  28
  29 #define to_exynos_crtc(x)       container_of(x, struct exynos_drm_crtc, base)
  30 #define to_exynos_plane(x)      container_of(x, struct exynos_drm_plane, base)
  31
  32 /* this enumerates display type. */
  33 enum exynos_drm_output_type {
  34         EXYNOS_DISPLAY_TYPE_NONE,
  35         /* RGB or CPU Interface. */
  36         EXYNOS_DISPLAY_TYPE_LCD,
  37         /* HDMI Interface. */
  38         EXYNOS_DISPLAY_TYPE_HDMI,
  39         /* Virtual Display Interface. */
  40         EXYNOS_DISPLAY_TYPE_VIDI,
  41 };
  42
  43 struct exynos_drm_rect {
  44         unsigned int x, y;
  45         unsigned int w, h;
  46 };
  47
  48 /*
  49  * Exynos drm plane state structure.
  50  *
  51  * @base: plane_state object (contains drm_framebuffer pointer)
  52  * @src: rectangle of the source image data to be displayed (clipped to
  53  *       visible part).
  54  * @crtc: rectangle of the target image position on hardware screen
  55  *       (clipped to visible part).
  56  * @h_ratio: horizontal scaling ratio, 16.16 fixed point
  57  * @v_ratio: vertical scaling ratio, 16.16 fixed point
  58  *
  59  * this structure consists plane state data that will be applied to hardware
  60  * specific overlay info.
  61  */
  62
  63 struct exynos_drm_plane_state {
  64         struct drm_plane_state base;
  65         struct exynos_drm_rect crtc;
  66         struct exynos_drm_rect src;
  67         unsigned int h_ratio;
  68         unsigned int v_ratio;
  69 };
  70
  71 static inline struct exynos_drm_plane_state *
  72 to_exynos_plane_state(struct drm_plane_state *state)
  73 {
  74         return container_of(state, struct exynos_drm_plane_state, base);
  75 }
  76
  77 /*
  78  * Exynos drm common overlay structure.
  79  *
  80  * @base: plane object
  81  * @index: hardware index of the overlay layer
  82  *
  83  * this structure is common to exynos SoC and its contents would be copied
  84  * to hardware specific overlay info.
  85  */
  86
  87 struct exynos_drm_plane {
  88         struct drm_plane base;
  89         const struct exynos_drm_plane_config *config;
  90         unsigned int index;
  91 };
  92
  93 #define EXYNOS_DRM_PLANE_CAP_DOUBLE     (1 << 0)
  94 #define EXYNOS_DRM_PLANE_CAP_SCALE      (1 << 1)
  95 #define EXYNOS_DRM_PLANE_CAP_ZPOS       (1 << 2)
  96 #define EXYNOS_DRM_PLANE_CAP_TILE       (1 << 3)
  97 #define EXYNOS_DRM_PLANE_CAP_PIX_BLEND  (1 << 4)
  98 #define EXYNOS_DRM_PLANE_CAP_WIN_BLEND  (1 << 5)
  99
 100 /*
 101  * Exynos DRM plane configuration structure.
 102  *
 103  * @zpos: initial z-position of the plane.
 104  * @type: type of the plane (primary, cursor or overlay).
 105  * @pixel_formats: supported pixel formats.
 106  * @num_pixel_formats: number of elements in 'pixel_formats'.
 107  * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*)
 108  */
 109
 110 struct exynos_drm_plane_config {
 111         unsigned int zpos;
 112         enum drm_plane_type type;
 113         const uint32_t *pixel_formats;
 114         unsigned int num_pixel_formats;
 115         unsigned int capabilities;
 116 };
 117
 118 /*
 119  * Exynos drm crtc ops
 120  *
 121  * @atomic_enable: enable the device
 122  * @atomic_disable: disable the device
 123  * @enable_vblank: specific driver callback for enabling vblank interrupt.
 124  * @disable_vblank: specific driver callback for disabling vblank interrupt.
 125  * @mode_valid: specific driver callback for mode validation
 126  * @atomic_check: validate state
 127  * @atomic_begin: prepare device to receive an update
 128  * @atomic_flush: mark the end of device update
 129  * @update_plane: apply hardware specific overlay data to registers.
 130  * @disable_plane: disable hardware specific overlay.
 131  * @te_handler: trigger to transfer video image at the tearing effect
 132  *      synchronization signal if there is a page flip request.
 133  */
 134 struct exynos_drm_crtc;
 135 struct exynos_drm_crtc_ops {
 136         void (*atomic_enable)(struct exynos_drm_crtc *crtc);
 137         void (*atomic_disable)(struct exynos_drm_crtc *crtc);
 138         int (*enable_vblank)(struct exynos_drm_crtc *crtc);
 139         void (*disable_vblank)(struct exynos_drm_crtc *crtc);
 140         enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc,
 141                 const struct drm_display_mode *mode);
 142         bool (*mode_fixup)(struct exynos_drm_crtc *crtc,
 143                            const struct drm_display_mode *mode,
 144                            struct drm_display_mode *adjusted_mode);
 145         int (*atomic_check)(struct exynos_drm_crtc *crtc,
 146                             struct drm_crtc_state *state);
 147         void (*atomic_begin)(struct exynos_drm_crtc *crtc);
 148         void (*update_plane)(struct exynos_drm_crtc *crtc,
 149                              struct exynos_drm_plane *plane);
 150         void (*disable_plane)(struct exynos_drm_crtc *crtc,
 151                               struct exynos_drm_plane *plane);
 152         void (*atomic_flush)(struct exynos_drm_crtc *crtc);
 153         void (*te_handler)(struct exynos_drm_crtc *crtc);
 154 };
 155
 156 struct exynos_drm_clk {
 157         void (*enable)(struct exynos_drm_clk *clk, bool enable);
 158 };
 159
 160 /*
 161  * Exynos specific crtc structure.
 162  *
 163  * @base: crtc object.
 164  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
 165  * @ops: pointer to callbacks for exynos drm specific functionality
 166  * @ctx: A pointer to the crtc's implementation specific context
 167  * @pipe_clk: A pointer to the crtc's pipeline clock.
 168  */
 169 struct exynos_drm_crtc {
 170         struct drm_crtc                 base;
 171         enum exynos_drm_output_type     type;
 172         const struct exynos_drm_crtc_ops        *ops;
 173         void                            *ctx;
 174         struct exynos_drm_clk           *pipe_clk;
 175         bool                            i80_mode : 1;
 176 };
 177
 178 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc,
 179                                               bool enable)
 180 {
 181         if (crtc->pipe_clk)
 182                 crtc->pipe_clk->enable(crtc->pipe_clk, enable);
 183 }
 184
 185 struct drm_exynos_file_private {
 186         /* for g2d api */
 187         struct list_head        inuse_cmdlist;
 188         struct list_head        event_list;
 189         struct list_head        userptr_list;
 190 };
 191
 192 /*
 193  * Exynos drm private structure.
 194  *
 195  * @pending: the crtcs that have pending updates to finish
 196  * @lock: protect access to @pending
 197  * @wait: wait an atomic commit to finish
 198  */
 199 struct exynos_drm_private {
 200         struct drm_fb_helper *fb_helper;
 201
 202         struct device *g2d_dev;
 203         struct device *dma_dev;
 204         void *mapping;
 205
 206         /* for atomic commit */
 207         u32                     pending;
 208         spinlock_t              lock;
 209         wait_queue_head_t       wait;
 210 };
 211
 212 static inline struct device *to_dma_dev(struct drm_device *dev)
 213 {
 214         struct exynos_drm_private *priv = dev->dev_private;
 215
 216         return priv->dma_dev;
 217 }
 218
 219 static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
 220 {
 221         struct exynos_drm_private *priv = drm_dev->dev_private;
 222
 223         return priv->mapping ? true : false;
 224 }
 225
 226 int exynos_drm_register_dma(struct drm_device *drm, struct device *dev,
 227                             void **dma_priv);
 228 void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev,
 229                                void **dma_priv);
 230 void exynos_drm_cleanup_dma(struct drm_device *drm);
 231
 232 #ifdef CONFIG_DRM_EXYNOS_DPI
 233 struct drm_encoder *exynos_dpi_probe(struct device *dev);
 234 int exynos_dpi_remove(struct drm_encoder *encoder);
 235 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
 236 #else
 237 static inline struct drm_encoder *
 238 exynos_dpi_probe(struct device *dev) { return NULL; }
 239 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
 240 {
 241         return 0;
 242 }
 243 static inline int exynos_dpi_bind(struct drm_device *dev,
 244                                   struct drm_encoder *encoder)
 245 {
 246         return 0;
 247 }
 248 #endif
 249
 250 #ifdef CONFIG_DRM_EXYNOS_FIMC
 251 int exynos_drm_check_fimc_device(struct device *dev);
 252 #else
 253 static inline int exynos_drm_check_fimc_device(struct device *dev)
 254 {
 255         return 0;
 256 }
 257 #endif
 258
 259 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
 260                          bool nonblock);
 261
 262
 263 extern struct platform_driver fimd_driver;
 264 extern struct platform_driver exynos5433_decon_driver;
 265 extern struct platform_driver decon_driver;
 266 extern struct platform_driver dp_driver;
 267 extern struct platform_driver dsi_driver;
 268 extern struct platform_driver mixer_driver;
 269 extern struct platform_driver hdmi_driver;
 270 extern struct platform_driver vidi_driver;
 271 extern struct platform_driver g2d_driver;
 272 extern struct platform_driver fimc_driver;
 273 extern struct platform_driver rotator_driver;
 274 extern struct platform_driver scaler_driver;
 275 extern struct platform_driver gsc_driver;
 276 extern struct platform_driver mic_driver;
 277 #endif